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Natural Flavonoids Solubility Extraction Method Pharmacological activity Pharmacological effects Pharmacokinetics Indications Side effects
Luteolin structure
Chemical Name:
Molecular Formula:
Formula Weight:
MOL File:

Luteolin Properties

Melting point:
~330 °C(lit.)
Boiling point:
348.61°C (rough estimate)
1.2981 (rough estimate)
refractive index 
1.4413 (estimate)
storage temp. 
Water Solubility 
Soluble in aqueous alkaline solutions (1.4 mg/ml), ethanol (~5 mg/ml), dimethyl sulfoxide (7 mg/ml), 1eq. Sodium hydroxide (5 mM), dimethylformamide (~20 mg/ml), water (1 mg/ml) at 25°C and methanol.
CAS DataBase Reference
491-70-3(CAS DataBase Reference)
EPA Substance Registry System
4H-1-Benzopyran- 4-one, 2-(3,4-dihydroxyphenyl)-5, 7-dihydroxy-(491-70-3)
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
Hazard Codes  Xi
Risk Statements  36/37/38
Safety Statements  26-36-36/37/39
WGK Germany  3
RTECS  LK9275210
HS Code  29329990
Signal word:
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362
H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
Precautionary statements:
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P304+P340 IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P405 Store locked up.

Luteolin price More Price(13)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 440025 Luteolin An antioxidant flavonoid and a free radical scavenger. 491-70-3 5mg $75.2 2018-11-20 Buy
Sigma-Aldrich 03880590 Luteolin primary reference standard 491-70-3 25mg $343 2018-11-13 Buy
TCI Chemical T2682 3',4',5,7-Tetrahydroxyflavone >98.0%(HPLC) 491-70-3 1g $18 2018-11-22 Buy
TCI Chemical T2682 3',4',5,7-Tetrahydroxyflavone >98.0%(HPLC) 491-70-3 5g $53 2018-11-22 Buy
Alfa Aesar L14186 3',4',5,7-Tetrahydroxyflavone, 97% 491-70-3 100mg $62.5 2018-11-13 Buy

Luteolin Chemical Properties,Uses,Production

Natural Flavonoids

Luteolin is a very typical kind of natural flavonoid and belongs to weak acidic tetrahydroxy flavonoids. It is widely distributed in the plant kingdom and is mainly presented in honeysuckle, chrysanthemum, Nepeta, Herba Ajuga and some other drugs as well as many kinds of vegetables such as thyme, Brussels sprouts, cabbage, cauliflower, beets, broccoli and carrots. Moreover, it is also distributed in the form of glycosides in celery, green pepper, and basil leaves as well as the fruit shell of the legume plant Arachis hypogaea, Ajuga decumbus, Lonicera japonica Thunb, Gentianaceae plant Gentianopsis paludosa, and Valerianaceae plant Valeriana amurensis Smir. The pure product of Luteolin appears as yellow crystalline powder.
the pale yellow powder of luteolin and its sources of plant
Figure 1 the pale yellow powder of luteolin and its sources of plant.


Luteolin is a golden needles product containing a crystal water molecule that is precipitated from ethanol. It is soluble in alcohol and diethyl ether; slightly soluble in hot water, and insoluble in cold water. Its aqueous solution exhibits pleasing yellow and can be dissolved in 10% aqueous solution of sodium hydroxide and appears as dark yellow color. It is stable under normal conditions.

Extraction Method

According to the report of the literature, method for extracting the active ingredient luteolin from the peanut shell includes solvent method, ultrasonic method, microwave method and supercritical CO2 method, wherein the solvent extraction method is the most widely used with the major extraction solvents used being methanol, acetone and ethyl acetate.
The above information is edited by the Chemicalbook of Dai Xiongfeng.

Pharmacological activity

1. Luteolin has various kinds of pharmacological activities. Plants rich in luteolin content are often used as a traditional Chinese medicine for treatment of disease. With the deepening of the study on luteolin, researchers have found that it have anti-cancer activities including inhibiting the proliferation of tumor cell, inducing the apoptosis of tumor cells as well as sensitizing anti-cancer drugs. Moreover, it also has anti-inflammatory, anti-oxidant as well as protein effect on the nervous system.
2. Luteolin is a kind of PDE4 inhibitors, phosphodiesterase inhibitors (2) and interleukin-6 inhibitor (3). It can significantly reverse the induction effect of anesthesia of mice xylazine/ ketamine induction of anesthesia. 4 Preclinical studies have shown that the pharmacological effects of luteolin might include anti-oxidant, anti-inflammatory, antibacterial and anti-cancer. Preliminary studies have found that luteolin can inhibit the apoptosis of the angiogenesis induced cell, affect the tumor growth in animal models, reduce the tumor growth and also improve the cytotoxicity of certain anti-cancer drugs on the tumor cell, indicating that luteolin could be potential cancer chemo-preventive drugs and chemotherapy drugs.
3. The mechanism of biological activity of luteolin may be regulating the level of ROS, inhibition of topoisomerase I and topoisomerase II, reducing the transcription factor NF-κB and AP-1, and stabilizing p53 and inhibition of phosphatidylinositol 3-kinase, signal transduction and activator of transcription 3 (STAT3), insulin-like growth factor 1 receptor (IGF1R) and human epidermal growth factor receptor II activity.

Pharmacological effects

1, anti-tumor: the inhibitory effect of luteolin on tumor cell proliferation is mainly through inhibiting certain intracellular kinase activity and causing cell cycle arrest.
2. Antioxidant: the antioxidant effect of luteolin itself mainly exhibits as a reducing agent involved in the oxidation reaction as well as enhancing the activity of the biological antioxidant system.
3, Anti-inflammatory: the anti-inflammatory activity of luteolin is mainly manifested that it can reduce the activity of inflammatory cytokine transcription factor and production of the pro-inflammatory cytokines and inflammatory mediators.
4, the neuro-protective effect: luteolin has protective effect on the learning and memory ability of the nervous system.
5, anti-fibrosis: luteolin can reduce the extent of liver fibrosis, reduce the hydroxyproline (HYP) in the liver tissue, the content of malondialdehyde (MDA) and the mRNA expression of type I pro-collagen mRNA. In vitro, it can inhibit the proliferation of hepatic star like cells (HSC) and collagen synthesis. It can also alleviate the bleomycin-induced pulmonary fibrosis and histopathological changes, reduce the lung weight index, significantly suppress the increase of MDA, HYP and inhibit the expression of transforming growth factor-β1 (TGF-β1) mRNA in the lung tissue. In vitro, it can inhibit the proliferation of human embryo lung fibroblasts, induce the apoptosis.
6, anti-fertility and hormonal effects: luteolin has a significant dose-dependent anti-implantation activity. After oral administration, it can significantly increase the weight, diameter of uterine, the thickness of endometrium and the height of epithelial cells. Single administration has estrogenic effect while its combination with ethinyloestradiol exhibits anti-estrogenic effect.
7, other functions: luteolin can inhibit various kinds of bacteria and viruses, such as Staphylococcus aureus, Escherichia coli, herpes simplex virus, polio virus, Coxsackie B3 virus. It can inhibit the activity of integrase of AIDS virus HIV-1 and therefore has potential anti-HIV effect. Luteolin is able to bind to the s2 protein of the severe acute respiratory syndrome (SARS) corona virus, thus inhibiting viral for entry into host cells. Luteolin also has inhibitory effect on the Leishmania donovani. Through inhibiting the action of the topoisomerase I and topoisomerase II of Leishmania donovani and inhibit their growth. Additionally, luteolin also has immunomodulatory effects and so on.


The pharmacokinetic experiment of rat has shown that after the oral administration of luteolin by rats, the in vivo plasma concentration is significantly higher than that after acid hydrolysis which demonstrating it is mostly presented in the glucuronic acid-bound form. The biliary study have found that the level of luteolin in the biliary sample is undetectable using HPLC method at each time after the administration if without the hydrolysis treatment, demonstrating that luteolin is mainly presented in the bound form in the bile.


This product has antitussive, expectorant effect. The antitussive effect is through suppressing the cough center; the expectorant effect of this product is related to its ability of promoting the secretion of the respiratory tract gland and dissolving the acidic mucopolysaccharides in the sputum. It also has anti-inflammatory, anti-allergic and immune enhancement effect. It also has inhibitory effect on Staphylococcus aureus, Streptococcus pneumoniae and Pseudomonas aeruginosa. It can also be used for the treatment of chronic bronchitis and other respiratory diseases sputum.

Side effects

Some patients may get dry mouth, upset stomach, dizziness, nausea and other side effects. After prolonged administration, the symptom may gradually disappear.

Chemical Properties

Yellow Needles




Hydroxylated flavone derivative with strong anti-oxidant and radical scavenging properties. Suggested to play a role in cancer prevention

Biological Activity

Anti-inflammatory, antioxidant and free radical scavenger. Inhibits LPS-induced TNF- α , IL-6 and inducible nitric oxide production and blocks NF- κ B and AP-1 activation. Antiproliferative; inhibits proliferation of Lewis lung carcinoma cells in vivo .

Anticancer Research

It is a flavone with yellow crystalline appearance. Dietary sources of luteolin includeoregano, celery, orange, broccoli, rosemary, green pepper, peppermint, parsley,olive oil, thyme, carrot, dandelion, chamomile tea, and perilla. It is found to obstructepithelial-mesenchymal transition (Singh et al. 2016b). It is inhibiting the cancercell proliferation, angiogenesis, and metastasis. In addition, it suppresses thepathways like PI3K/AKT, NF-κB, and X-linked inhibitor of apoptosis protein(XIAP) which enhances the cell growth and function. It also induces apoptosis andtumor suppressor p53. Hence, luteolin can be used as a potential antineoplasticagent in different cancers (Lin et al. 2008).

Luteolin Preparation Products And Raw materials

Raw materials

Preparation Products

Luteolin Suppliers

Global( 324)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Shaanxi Yikanglong Biotechnology Co., Ltd.
17791478691 CHINA 297 58
Capot Chemical Co.,Ltd.
+86 (0)571-855 867 18
+86 (0)571-858 647 95 China 19919 60
Shenzhen Sendi Biotechnology Co.Ltd.
0755-23311925 18102838259
0755-23311925 CHINA 3203 55
Henan DaKen Chemical CO.,LTD.
+86-371-55531817 CHINA 21930 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693 CHINA 20680 55
Mainchem Co., Ltd.
+86-0592-6210733 CHINA 32457 55
Nanjing Finetech Chemical Co., Ltd.
025-85710122 17714198479
025-85710122 CHINA 892 55
Xiamen AmoyChem Co., Ltd
+86 (0)592-605 1114 CHINA 6374 58
Hebei Chisure Biotechnology Co., Ltd.
+8613091036086; +8613292890173
+8613292893290; CHINA 1019 58
Shanghai Zheyan Biotech Co., Ltd.
18017610038 CHINA 3623 58

View Lastest Price from Luteolin manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2018-08-10 Luteolin
US $2.00 / KG 1KG 98% 10000kg career henan chemical co
2019-05-05 Luteolin
US $10.00 / KG 1KG 99% 500tons/month Hebei Chisure Biotechnology Co., Ltd.

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